Hi Jamie, this one's been passed back to the site management team.
As Kevin mentioned, this started happening from day 1 (over four years ago). It is true there was a total lack of maintenance but aside from sealing in some way I can't see what would help prevent this reoccurring. With any seal there could be implications to grip levels due to the poolside layout / poor drainage.
I am due to speak with them soon on another matter (not flooring this time) so I will see where things are at and if any new info will post.
Thanks for taking an interest and a big thankyou to Kev (and Colin) who gave up there time FOC. Very much appreciated.